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Finding the Fourth Proportional to 501,245.56, 691,719.78 and 274,892.68

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Solution

The fourth proportional to 501,245.56, 691,719.78 and 274,892.68 is: 379,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,245.56 : 691,719.78 = 274,892.68 : x
  2. Step 2: Convert to fraction form
    501,245.56/691,719.78 = 274,892.68/x
  3. Step 3: Cross multiply
    501,245.56x = 691,719.78 × 274,892.68
  4. Step 4: Simplify right side
    501,245.56x = 190,148,704,133.21
  5. Step 5: Solve for x
    x = 190,148,704,133.21/501,245.56
  6. Step 6: Final answer
    x = 379,352.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.